VRRPv3 provides address redundancy for both IPv4 and IPv6 router addresses. VRRPv3 support in LCOS SX is similar to VRRP support. The following table provides a summary of the differences.
| VRRPv2 | VRRPv3 |
|---|---|
| Supports redundancy to IPv4 addresses | Supports redundancy to IPv4 and IPv6 addresses |
| Supports authentication | Does not support authentication |
| No concept of link-local address in IPv4 address space | For IPv6 addresses, VRRP IP contains the link-local IPv6 address too. |
| The interval time used for sending VRRP Advertisement packets is in seconds. | The interval time is in the order of centiseconds. |
| VRRP MAC address format is 00-00-5E-00-01-{VRID} | VRRP MAC address format for IPv6 VR IP is 00-00-5E-00-02-{VRID} |
| SNMP MIB RFC according to 2787. The counters are 32-bit ones. | SNMP MIB RFC as per RFC 6527. The counters are 64-bit ones. |
Note:
Note the following:
- To enable VRRP on the device, use the ip vrrp command. See ip vrrp (Global Config). This command enables VRRP (v2 or v3, whichever version is the configured version) and makes it operational.
- A command is available to configure debugging for VRRP packets. For information, see debug ip vrrp.
